Problemas com o rendered em um selectOneMenu[resolvido]

import java.io.Serializable;
import java.util.Date;

public class MEntrada implements Serializable{
	
	private Integer id;
	private Date data = new Date();
	private String notaFiscal;
	private Double quantidadeRecebida;
	private Double valorUnitario;
	private MFornecedor fornecedor;
	private MItem item;
	private String tipo;
}

public List getSelectItens() {
		if (selectItens == null) {
			selectItens = new ArrayList<SelectItem>();
			
			List itens = itemDao.listarTodos();
			Iterator<MItem> it = itens.iterator();
			while (it.hasNext()) {
				MItem item = it.next();
				selectItens.add(new SelectItem(item, item.getNome()));
			}
		}
		
		return selectItens;
	}

public class ItemConverter implements Converter {

	/* (non-Javadoc)
	 * @see javax.faces.convert.Converter#getAsObject(javax.faces.context.FacesContext, javax.faces.component.UIComponent, java.lang.String)
	 */
	public Object getAsObject(FacesContext arg0, UIComponent arg1, String arg2)
			throws ConverterException {
		
		MItem item = null;
		
		if (arg2 != null) {
			item = DaoFactory.getItemDao().buscarPorCodigoExtendido(arg2);
		}

		return item;
	}

	/* (non-Javadoc)
	 * @see javax.faces.convert.Converter#getAsString(javax.faces.context.FacesContext, javax.faces.component.UIComponent, java.lang.Object)
	 */
	public String getAsString(FacesContext arg0, UIComponent arg1, Object arg2)
			throws ConverterException {

		String cod = null;
		
		if (arg2 != null) {
			if (arg2 instanceof MItem) {
				MItem item = (MItem) arg2;
				cod = item.getCodigoExtendido();
			}
		}
		
		return cod;
	}

}